kz, also known as RE:NDZ, was one of the earliest popular authors of Miku songs. Most of his works have become hits, beginning with "Packaged", one of Hatsune Miku's most popular post-release songs. kz is skilled at creating reverberant technopop pieces with Miku.
The amateur music circle livetune, of which kz is now the sole member member, released an album of Miku tracks titled Re:Package at the end of 2007. It was then resold to Victor Entertainment with a major circulation release on August 28, 2008, making it the first Hatsune Miku CD to be sold by a major label. kz has been the sole member of livetune since 2009.
Although he has not been active on Nico Nico since late 2008, kz has moved to YouTube and uploaded a number of songs there. He is also a DJ (being known to wear crazy patterned hoodies during his public appearances) and has released a number of songs outside the VOCALOID scene. His musical inspirations include Ryuichi Sakamoto, Daft Punk, and Zedd. kz is known to wear crazy patterned hoodies during his public appearances.
kz's most notable song, with over 8,000,000 views. It is featured in the 39's Giving Day 2012 Concert, the MikuPa Live in Hong Kong and Taiwan 2012 Concert, the MikuPa Live in Sapporo 2013 Concert and the MikuPa Live in Kansai 2013 Concert; and also in the game -Project DIVA- F.